The Simpson Deck-Drive DSV Wood Screw in #8 x 1-1/4" is a load-rated fastening solution engineered specifically for preservative-treated wood decking applications. Built by Simpson, this T25 6-lobe drive screw features a ribbed flat head, variable thread design, and a high-low threaded tip that delivers fast starts and reliable countersinking into today's dimensional lumber deck boards. The red color finish blends naturally with wood decking surfaces, while the Quik Guard coating provides durable corrosion resistance for exterior and treated-wood environments.

Key Features

• Quik Guard corrosion-resistant coating - provides protection in exterior and certain preservative-treated wood applications as described by ICC-ES AC257, exposure conditions 1 and 3, keeping fasteners reliable in outdoor weather conditions
• Ribbed flat head with underhead nibs - countersinks cleanly and easily into wood decking surfaces, leaving a finished, professional appearance without splintering or tear-out
• Variable thread design with high-low threaded tip - optimized for dimensional lumber, promoting consistent engagement and reducing the risk of splitting during installation
• High-Low Threaded Tip (Type-17 style point) - enables fast starts so installation is quicker and more controlled, even in dense or treated wood
• Low-torque thread design - allows up to 35% more screws to be driven on a single battery charge, reducing downtime and increasing productivity on large deck projects
• Load-rated for shear, pull-through, and withdrawal resistance - engineered performance data gives builders and inspectors confidence that the connection meets structural requirements
• Shank designed for wood movement - built to withstand the swelling and shrinkage common with wood decking products, helping maintain holding power over the life of the deck
• Red color blends with wood decking - screw heads become less visible once driven, contributing to a cleaner finished deck appearance
• T25 6-lobe driver bit included - the correct drive bit comes in the package, so installation can begin right away without a separate bit purchase

Why This Product

• Built for preservative-treated decking - the Quik Guard coating is specifically rated for use in exterior and certain preservative-treated wood environments per ICC-ES AC257, making this screw an appropriate and code-aligned choice for deck construction in challenging conditions
• Efficiency on the job site - the low-torque thread design reduces battery drain significantly, allowing up to 35% more fasteners per charge and keeping work moving without frequent interruptions
• Load-rated for structural confidence - unlike generic deck screws, this fastener carries load ratings for shear, pull-through, and withdrawal resistance, giving contractors and inspectors documented performance data to reference
• Engineered for wood's natural movement - the shank geometry is specifically designed to handle the seasonal swelling and shrinkage of wood decking, reducing the likelihood of loosening or surface distortion over time

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #8
• Length: 1-1/4 in.
• Head Diameter: 0.333 in.
• Head Type: Ribbed Flat Head
• Drive Type: T25 6-Lobe
• Thread Type: Variable Thread
• Point Type: High-Low Threaded Tip
• Coating/Material: Quik Guard Coating
• Color: Red

Available Pack Options

• DSVR114R1LB: 1 Lb - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVR114R350: 350 Pk
• DSVR114R5LB: 5 Lb - includes (1) T25 6-lobe driver bit (replacement driver bit - BIT25T-2-R2)
• DSVR114MB: 1750 Pk - includes (2) T25 6-lobe driver bits (replacement driver bit - BIT25T-2-R2)

Frequently Asked Questions

What type of decking applications is this screw designed for?

This screw is engineered for preservative-treated wood decking applications. The Quik Guard coating is rated for exterior use and certain preservative-treated wood environments as described by ICC-ES AC257, exposure conditions 1 and 3.

Is this screw load-rated for structural use?

Yes. The Deck-Drive DSV Wood Screw is load-rated for shear, pull-through, and withdrawal resistance, providing documented performance data that supports structural decking connections.

What driver bit is required to install this screw?

This screw uses a T25 6-lobe (Torx-style) driver bit. A T25 6-lobe driver bit is included, so you can begin installation immediately.

How does the variable thread design benefit installation in dimensional lumber?

The variable thread design is optimized specifically for dimensional lumber, helping the screw seat consistently and reducing the torque required during driving. This lower torque demand allows up to 35% more screws to be driven on a single battery charge compared to conventional deck screws.